Cookie Usage Statistics Colour Key Sudden Death Monthly Poll Caption Comp eMail Author Shops
Ships Fleets Weaponry Species People Timelines Calculators Photo Galleries
Stations Design Lineage Size Charts Battles Science / Tech Temporal Styling Maps / Politics
Articles Reviews Lists Recreation Search Site Guide What's New Forum
Bioship Planetbuster Assault Ship Fighter Emissary Kendra Pagh Prophet Solar Sail Additional Cube Probe Singularity Ship Sphere Tactical Cube Transwarp Prototype Yacht Dreadnought Freighter Galor Hideki Keldon Breen Frigate Attack Ship Battlecruiser Battleship Dreadnought Karemma Ship Air Tram Akira Ambassador Antares Centaur Challenger Cheyenne Class F Shuttle Constellation Constitution Constitution Daedalus Danube Defender Defiant Delta Flyer Endgame Nova Endgame Shuttle Excelsior Excelsior II Excelsior Variant 1 Federation Class Raider Scout Trainer Freedom Gagarin Gage Galaxy Galaxy Yacht Griffin Hermes Holo Ship Intrepid Kelvin Luna Miranda Nebula New Orleans Niagara Norway Nova Oberth Olympic Orbital Shuttle Peregrine Polaris Prometheus Ptolemy Raven Refit Galaxy Reliant Rigel Ross Saber Sagan Saladin Shelley Sovereign Sovereign Yacht Soyuz Springfield Steamrunner Sutherland Sydney Travel Pod Trident Type 3 Shuttle Type 6 Shuttle Type 7 Shuttle Type 8 Shuttle Type 9 Shuttle Type 10 Shuttle Type 11 Shuttle Type 14 Shuttle Type 15 Shuttle Type 17 Shuttle Type 18 Shuttle Warp Sled Wells Work Bee Yeager Additional D'Kora Additional Ares Conestoga DY-100 Intrepid J Class Neptune NX Class NX Test Ship Saturn V SS Enterprise The Phoenix Type 0 Shuttle USS Enterprise Valiant Y Class Additional Raider Predator Additional B'rel D'tai D-5 D-7 Early Bird of Prey K'pak K'T'Inga Bird of Prey Cargo Ship Tanker Negh'var Raptor Regency Voodieh Vor'cha Additional D'Deridex Early Bird of Prey Narada Norexan Bird of Prey D7 Science ship Scout Shuttle Scimitar Scorpion Additional Battleship Collector Destroyer Additional Cell Ship Module Ship Salvage Ship Additional Observation Ship War Ship Additional D'Kyr Sh'Raan Suurok Vahklas Lander Additional Aquatic Cruiser Arboreal Ship Insectoid Assault Ship Insectoid Fighter Insectoid Warship Primate Ship Primate Shuttle Reptilian Warship Additional Dauntless Doomsday Machine Kumari class Angosian Ship Cravic Ship Yonada Hirogen Ship Husnock Ship Krenim Patrol Krenim Timeship Krenim Warship Malon Ship Mawasi Cruiser Eymorg Ship Nihydron Ship Pralor Ship Promellian Battlecruiser Tarellian Ship Early Tholian Ship V'Ger Whale Probe Varro Ship Zahl Ship Additional

Constellation Class

Size Comp
Universe : Prime Timeline
Affiliation : Federation
Class Name : Constellation Class [1]
Type : Cruiser (obsolete)
Unit Run :
NCC 2593 USS Hathaway - Retired [2]
NCC 2893 USS Stargazer - Retired [1]
NCC 3069 USS Magellan [3] - Destroyed
NCC 3890 [3] USS Gettysburg [4] - Active
NCC 9754 [3] USS Victory - Active [5]
NX/NCC 1974 USS Constellation [6] - Active
plus 3 others built in total. 2 have been lost in all. 2 have been retired from service.
Commissioned : 2283 - 2295, class remains in service
Dimensions : Length : 231 m [7]
Beam : 135 m
Height : 65 m [8]
Decks : 15 [9]
Mass : 325,000 metric tons
Crew : 520
Armament : 16 x Type VIII phaser bank, total output 7,500 TeraWatts
4 [9] x 2nd class photon torpedo tube with 200 rounds
Defence Systems : Standard shield system, total capacity 418,500 TeraJoules
Standard Duranium Single hull.
Standard level Structural Integrity Field
Warp Speeds
(TNG scale) :
Normal Cruise : 6
Maximum Cruise : 8
Maximum Rated : 8.6 for 12 hours.
Strength Indices :
(Galaxy class = 1,000)
Beam Firepower : 150
Torpedo Firepower : 250
Weapon Range and Accuracy : 160
Shield Strength : 155
Hull Armour : 10
Speed : 680
Combat Manoeuvrability : 7,080
Overall Strength Index : 224
Diplomatic Capability : 5
Expected Hull Life : 80
Refit Cycle : Minor : 1 year
Standard : 1 years
Major : 10 years


The Constellation class was fielded during the 2280's as a modern counterpart to the Constitution class then in service. Like the Constitutions, the Constellation requirement issued in 2272 called for a vessel capable of long duration exploratory, scientific and diplomatic missions. The new ship was to be able to perform this role over the longer ranges called for now that the Federation had acquired new members beyond its previous borders. In addition, the Constellation's combat capability was to put it ahead of any current or projected vessel in the Romulan and Klingon Empires.

The Constellations configuration marked a substantial change in Starfleet design practice of the time. During this era Starfleet had experienced significant problems generating and controlling the large scale structural integrity fields required for heavy cruiser class ships. The solution adopted was to build smaller vessels within one single hull unit, while larger vessels required two hull units fitted with independent SIF's; the Constitution class is a classic example of this philosophy.

With the Constellation it was thought that SIF technology had advanced to the point where a Heavy Cruiser class could be fielded within a single hull. This would allow much duplication to be avoided, freeing up space for extra equipment and improving the efficiency of the design. In addition to their unusual hulls, the Constellations employed four warp nacelles instead of the usual two - only the second Federation starship ever to try this variation after the Defender class designed a few years previously. It was thought that this would give the Constellation class a significant increase in speed and manoeuvrability across the warp flight envelope and improve the fuel efficiency at medium cruise speeds by some 15%.

In retrospect it can be seen that the Constellation designers attempted to accomplish too much in one step, a problem not helped by an unusually rushed design process which virtually guaranteed that faults would be experienced in service. Severe problems were encountered with the development of the new warp core and several vessels experienced a variety of failures with this system - the most notable being the USS Algeron which had to eject its warp core on three separate occasions because of emergencies.

After a great deal of time and effort working on this problem it was decided that the warp cores of the Constellation class were simply not up to the job of producing the power required. Starfleet was denied the resources required to produce a new design and refit the fleet, so instead a "stopgap" option was chosen - the power output of these ships was restricted by limiter software in the engineering systems.

Unfortunately while it solved the near constant emergencies, this measure also robbed the Constellation class of some of their most important advances. They were now seriously under powered for their size, a factor which adversely affected almost every aspect of their operation. Despite this Starfleet was committed to the production of these ships on a large scale. This went ahead as scheduled, and the Constellation class became the mainstay of the fleet.

Over the years many attempts were made to rectify the problems with the Constellation class, and eventually some success was achieved. Between 2300 and 2310 six units received a new uprated warp core which brought them close to their original designed power output. Other units of the fleet received new control software which allowed their power to be safely boosted by some 15% on average. However, by this time the class was some twenty years old and had fallen well behind the leading edge of technology. It was decided that an extensive refit of the Constellations would not be an efficient use of resources, and so these ships were forced to soldier on with their problems. With the advent of newer designs in the 2330's some of these vessels were retired altogether, while others were assigned border patrol duties.

The Constellations have had a generally undistinguished career, with one notable exception being the USS Stargazer. The first vessel commanded by Captain Jean Luc Picard, the Stargazer was the first vessel in Starfleet to perform the "Picard Manoeuvre" which it used to destroy an attacking craft now known to be a Ferengi Marauder. The Stargazer was heavily damaged in the engagement and was abandoned and believed destroyed. In 2364 the ship was recovered  [1] and now resides in the Fleet Museum. A few Constellation class vessels remain in service; as is often the case with past-their-prime designs the ships are now used for general support duties.

Colour key

Canon source Backstage source Novel source DITL speculation


# Series Season Source Comment
1 TNG 1 The Battle
2 TNG 2 Peak Performance
3 Star Trek Encyclopedia
4 TNG 1 Too Short a Season
5 TNG 2 Elementary, Dear Data
6 Star Trek VI : The Undiscovered Country
7 Star Trek Deep Space Nine Technical Manual Calculated from the scale diagram on page 317, compared to the Constitution class. Scaling of bridge module and impulse engines to the refit Constitution class gives a figure in the 230 - 260 range. Some non-canon sources give a length of 315 metres.
8 Star Trek Deep Space Nine Technical Manual Calculated from the scale diagram assuming a length of 231
9 Production drawing
Series : TNG Season 1
Episode : The Battle
Series : TNG Season 2
Episode : Peak Performance
Book : Star Trek Encyclopedia
Series : TNG Season 1
Episode : Too Short a Season
Series : TNG Season 2
Episode : Elementary, Dear Data
Film: Star Trek VI : The Undiscovered Country
Book : Star Trek Deep Space Nine Technical Manual
Comment : Calculated from the scale diagram on page 317, compared to the Constitution class. Scaling of bridge module and impulse engines to the refit Constitution class gives a figure in the 230 - 260 range. Some non-canon sources give a length of 315 metres.
Book : Star Trek Deep Space Nine Technical Manual
Comment : Calculated from the scale diagram assuming a length of 231
Source : Production drawing


The Constellation is a bit of a mystery ship. We know that the Constellation class USS Hathaway was launched as early as 2285 ("Peak Performance"), but we also know that the USS Constellation herself was in service as late as 2371 ("The Abandoned"). Given that we see so few of these ships, I've tried to suggest that they have had something of a troubled history - Picard described the Constellation class USS Stargazer as "underpowered", which led to most of the speculation here. I imagine that ships this old and rare wouldn't really be useful anymore beyond running supplies and suchlike.
© Graham & Ian Kennedy Page views : 123,160 Last updated : 22 Dec 2021